Adding-machine.



Patented July 24, 1917. 3 SHEET$ $HEET I.

F. C. RINSCHE ADDING MACHINE. APPLICATION men SEPT. \5. I9l4. 1,234,218.

.l/lII/IIIIIIlI/III F. C. RINSCHE. ADDING MACHINE APPLICATION men SEPT. I5. I914- 1,234,218. Patented July 24, 1917.

uuuuu uuuu UNITED STATES PATENT OFFICE.

FRANK C. RINSCHE, OF DETROIT, MICHIGAN, ASSIGNOR 'IO BURROUGHS ADDING MACHINE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

ADDING-MACHIN E.

Specification of Letters Patent.

Patented July 24, 1917.

Application filed September 15, 1914. Serial No. 861,772.

To all whom it may concern:

Be it known that I, FRANK C. RINSCHE, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Adding-Machines, of which the following is a specification.

The present invention relates more especially to that class of adding machines known in the trade as visible, which term has reference to the matter of recording in such manner that the operator can see the work as it proceeds, much as in the case of typewriting machines, having the so-called front strike characteristic.

The principal object of the invention is to protect the type carriers against accumula tion of dust and dirt and consequently interference with the proper action of the type carriers besides the filling in of depressions in the faces of'the type so that the desirable sharp impressions in the printing are not had. It will-be understood that in an add ing machine of the so-called visible class the type carriers in being set are projected through an opening in the casing of the machine. It is through such an opening that dust and dirt reaches the type carriers. In carrying out my invention I provide for automatically opening and closing the casing so that dust and dirt will be excluded. Thus I supply a closure for the opening in the casing and arrange for its being thrown back as a preliminary to projection of the type carriers through the opening and then for its being restored to closing position at the conclusion of the operation. Incidentally I utilize the closure as a line finder and gage.

I have here illustrated my invention as applied to the adding and listing machine known upon the market as the Burroughs Visible, which machine is in the main a redesign of an adding and listing machine heretofore known upon the market as the Pike. The general characteristics of the latter are Well understood by those skilled in the art. Reference may be had in this connection to Patent 763,692 issued June 28, 1904, and to Patent No. 955,789, issued J anuary 19, 1910.

In the drawings which accompany and form part of this specification, Figure 1 rep resents in vertical section the rear portion of a machine of the kind referred to, having incorporated therein a preferred form of means for carrying out my present invention; Flg. 2 illustrates some of the same parts in changed relationship which results from operation of the machine; Fi 3 is a cross section taken substantially on l1ne 3-3 of Fig. 1; Fig. 4: is a partial top plan view under normal conditions such as illustrated in Fig. 1; Fig. 5 is a similar view under conditions such as illustrated in Fig. 2.

The machine proper corresponds in the main with that illustrated in the above mentioned patents though difi'ering therefrom in particulars of the hammer controlling mechanism and in certain relationship of parts established for the purpose of presenting the recording work to the operators vision as it proceeds. Thus the type carrying levers 2 which pivot upon the rockshaft 3 have a contour and disposition which prevides for a front strike of the types 4 against the roller platen 5 when said types are driven by hammers 6. The casing of the machine is correspondingly constructed, that portion thereof which incloses the hammer heads and is designated by the numeral 7, being elevated just sufiicient for such purpose and being sloped downwardly toward the roller platen so that the operator of the machine when standing or seated in front of the machine, may have an unobstructed view of the platen just above the printing line. it being understood that the line-space feed occurs in an operation of the machine after the printing so that the imprint moves up into the operators lineof vision. The upper central portion of the frame piece 7 is in the form of a housing with sldes 7 beyond which the ink ribbon spools 8 are arranged upon the depressed portions of this frame piece in the usual manner so that the ink ribbon 9 stretches across the rear open end of this housing as best illustrated in Fig. 5, guiding posts 10 being located just beyond the, sides 7 of the latter. The top of the housing is open adjacent the platen, at 7*, sufiiciently for the free projection therethrough of the segmental type carrying arms of the levers 2. It is through this opening that dust and dirt is apt to fall and when accumulation thereof occurs on the oily sides of the type carriers a gummy substance forms which interferes with the free action of the type carriers and is known to prevent a proper positioning of them. F urthermore the faces of the type 4 fill so that sharp imprints are not had.

In carrying out my invention in the form here shown, I keep this opening closed, except when the type carriers are in action, by a curved plate 11 whose rear edge is normally in close proximity to the ink ribbon 9 where the latter runs closely adjacent the roller platen 5, as shown in Fig. 1, while its front edge slightly underl'aps the housing top. In lateral extent this plate corresponds with the width of the housing and it is preferably formed integral with side arms 11 lying closely adjacent the housing sides 7, as shown in Fig. 3, and extending down to a cross rod 12 on which they pivot. The plate 11 and the side arms 11 thus constitute a yoke which may swing upon said cross rod. The latter is a familiar element xof the machine proper and constitutes a pivof said bail.

otal support for a hammer-restoring bail 13 and also for the hammers 6. The side arms 11 of the said yoke have a gooseneck for- 18 connected by a link 19 to a full-stroke sec-- tor 20 secured to a rock shaft 21 which has a crank arm 22 connected by link 23 with a crank arm 2% on a rock shaft 25 carrying a cam plate 26. The latter serves the usual functions of rocking the hammer restoring bail and the familiar type-carrier restoring bail 27 which is secured to the rock shaft 3 and normally restrains the type-carrying levers 2 in opposition to springs whose func tion is to project the segmental type honeings through the opening 7. I utilize the oscillation of the hammer-restoring bail 13 to control the closure yoke. To this end I mount a roller stud 30 upon the left side arm 13 of said bail and hang from a frame stud 31 a rocker piece 32 to be operated upon by said roller stud and to operate in turn upon the yoke. This rocker piece has a concave edge 32 normally hugging the roller 30 as shown in Fig. 1, under enforcement of the spring 14, one of the yoke side arms 11 having a stud 33 which bears upon an upper straight edge of the rocker piece. The latter is of somewhat fan-shaped form and has an extension 32 below the concave edge 32*, said extension being in the form of a segment which presents a convex edge 32 for the roller stud 30 to travel upon, and

this edge being part of the time concentric with the rock shaft 12. The bail arm 13 cooperates in the usual manner with the cam plate'26 and the downward movement imparted to it by the roller stud 26 on said cam plate serves in the present instance to actuate the rocker piece 32 immediately upon inauguration of an operation of the machine. Thus there immediately occurs a sharp camming action of the roller stud 30 against the concave edge 32 of said rocker piece, said roller stud riding off said edge and ontothe convex edge 32. This occurs while the upper rear convex section of the acting edge of the cam plate 26 is traversing the roller 17* of the type-carrier restoring 'bail and consequently occurs, before there is any movement of the type-carrying levers. Therefore, the retraction of the closure yoke takes place before the type carriers move, and the opening 7" is fully uncovered in due time for projection therethrough of the-type carriers, it being understood that the swing of the rocker'piece 32 as effected by the above described camming action of the roller stud 30, is of such extent as to cause full retraction of said yoke by the action of the straight edge of the rocker piece against the stud 33 (Fig. 2). As the first half cycle of operation of the machine continues the roller stud 3O merely rides upon the edge 32 of the rocker piece, which edge is then concentric with the rock shaft 12. When the parts reverse their motion, upon release of the operating handle 16, said roller stud 30 travels back up said edge 32 and then, when the aforesaid concentric section of the acting edge of the cam 26 returns to engagement with the roller 17, the roller stud 30 arrives at the upper end of said rocker piece edge 32, and as the operation concludes the said roller stud 30 will pass upwardly beyond said edge and the closure yoke will be restored to normal, the concave edge 32 of the rocker piece becoming reengaged with the roller stud 30. The type carriers will meantime have been restored to their normal positions so that their upper ends are below the path of movement of the cover plate 11.

This cover plate may conveniently be utilized as a line finder and gage. It will be clear that its position is such as to perfectly adapt it to such purpose. Its .rear edge is normally in close proximity to the ink ribbon where the latter overlies the paper passing around the platen, and said rear edge definesa line immediately below the last imprint. Furthermore the cover plate or shutter returns to such position in every operation of., .the inachine and so is always ready to serve as a line finder. Its functioning in this respect, after the manner of devices of a similar character well known in the art, will be apparent from inspection of Fig. 4. This plate may be marked as these line finders commonly are and as illustrated in Fig. 4, so as to facilitate the vertical alinement of the printing.

I claim:

1. The combination with the casing, typecarriers, and actuating mechanism, said carriers adapted to be projected throu h an openin in the casing; of a movable osure for sai opening, and means for retracting said closure automatically by said actuating mechanism as a preliminary to projection of the type carriers, and for restoring it to closing position as the o eration of said actuating mechanism conc udes.

2. The combination with the casing, type carriers, platen, and actuating mechanism, said carriers adapted to be pngected throu h an opening in the casing a jacent to t e platen; of a movable closure for said openmg normally held in close proximity to the platen, and means for retracting said closure automatically by said actuating mechanism as a preliminary to projection of the type carriers, and for restoring it to closing position as the operation of said actuating mechanism concludes.

3. The combination with the casing, type carriers, and actuating mechanism, said carriers adapted to be projected through an opening in the casing; of a swinging closure for said opening, a spring holding said closure over said opening, and means for retracting said closure automatically by said actuating mechanism as a preliminary to projection of the type carriers, and for restorin it to closing position as the operation 0 said actuating mechanism concludes. 4. The combination with the casin type carriers, and actuating mechanism inc uding an oscillatory member, said carriers adapte to be pro'ected through an o ening in the casing; o a movable closure For said open ing, and means for retracting said closure by the oscillatory member of the actuating mechanism, with provisions for effecting the retraction at the beginning of the movement the closure reof said member and holdin tracted as movement thereo continues.

5. The combination with the apertured casing, type carriers, platen, and actuating mechanism includin an oscillatory member carrying a roller; 0 a spring-held swingin closure for the aperture of the casing, an a cam rocker acted upon bythe aforesaid roller and acting upon the closure, substantially as described.

FRANK C. RINSCHE.

Witnesses i R. S. MIELER'I,

R. W. FAIRCHILD.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

- Washington, D. 0. 

